A two-layer optimization prevention and control method for cascading failure considering safety and network loss
To address the cascading failure accident of power grid and to ensure the economic operation of power grid,the prevention and control method of cascading failure considering safety and network loss is studied.A two-layer optimization model is proposed and solved using the basic particle swarm algorithm.The inner layer is used to solve the safety margin of the grid for cascading failures,which is characterized by the distance between nodes'injected powers;the outer layer model integrates to achieve the maximum safety distance and the minimum network loss of the cascading failure of the power grid.Based on the IEEE-39 node system,the two-layer optimization model is solved and the solution results of the basic particle swarm algorithm and its multiple variants are analyzed and compared.Results show that the basic particle swarm algorithm is more effective,and the proposed cascading failure prevention and control method comprehensively considers the safety margin and network loss of the power grid for cascading failures,and can effectively improve the safety level of the power grid while maintaining a low level of network loss.
cascading failuresafety marginnetwork lossdouble-layer optimizationprevention and control
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